"Hard" MPB keys?

Now I could just be nitpicking, but I noticed an annoying "problem" with my MBP recently. The keys are supposed to be soft touch, meaning I don't have to apply lots of pressure for them to register. I grew used to typing with a light hand and it felt really comfortable.

I was editing a paper a few days back and had a lot of backtracking to do, hence the constant pressing of the left arrow key. I noticed that it required a lot more pressure for it to register. Seemed like its not soft touch at all. I've been playing around with it and there are times where I push it lightly (but enough for the button to sink, and with enough pressure that makes the other keys register) and the command doesn't register.

Its annoying the hell out of me. Anyone have any single key problems aside from me? Is it worth having my computer checked over this? I know its a small thing but its been bugging me.

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